Magazine holding a multiple number of screws to be used wth an electric drill

ABSTRACT

This invention relates to a cartridge or magazine holding a multiple number of screws to be used in connection with an electric drill having a screw driver type blade so that the operator may insert a multiple number of screws without having to place each screw individually into place prior to use of the drill.

3 States Patent 1 1 Bomar [4 Sept. 11, 1973 1 1 MAGAZINE HOLDING A MULTIPLE NUMBER OF SCREWS TO BE USED WTH AN ELECTRIC DRILL [76] Inventor: Russell Paul Bomar, 16321 Londelius, Sepulveda, Calif.

I22] Filed: Mar. 2, 1972 [21] Appl. No.: 231,222

[52] 11.5. C1. 29/212 R, 29/240 [51] Int. Cl B231 7/10, 823p 19/04 [58] Field of Search 29/212 R, 212 D,

[56] References Cited UNITED STATES PATENTS 3,478,405

11/1969 Brown et a1 29 212 R Passarella et al. 29/240 Dixon 29/211 R Primary ExaminerThomas H. Eager Attorney-Sanford Astor [57] ABSTRACT This invention relates to a cartridge or magazine holding a multiple number of screws to be used in connection with an electric drill having a screw driver type blade so that the operator may insert a multiple number of screws without having to place each screw individually into place prior to use of the drill.

8 Claims, 7 Drawing Figures PAIENTEDSEH Han SHEET 1 BF 2 .FlG.-2

MAGAZINE HOLDING A MULTIPLE NUMBER OF SCREWS TO BE USED WTI'I AN ELECTRIC DRILL BACKGROUND OF THE INVENTION In the process of building houses and buildings as well as other structures, carpenters must insert a very large number of screws into place in a repetitive manner. 'This has been done by the carpenter holding a handful of screws to be inserted, placing each one in place with his hand, inserting the blade of the screwdriver into the screw and screwing it into place. As each screw is inserted the carpenter must place the next screw into postion with his hand and follow the same procedure. 7 i

It is an object of the present invention to provide a magazine whereby multiple screws can be inserted one after the other without the carpenter having to place each one in place with his hand.

It is a further object of this invention to provide a magazine which is portable and may be attached to an electric drill used as a screwdriver to form one operational device for insertion of multiple screws. 7

Yet, a further object of this invention, is to provide a magazine whereby a carpenter can rapidly and without wasted motion install a multiple number of screws into a project.

BRIEF DESCRIPTION OF THE DRAWINGS The invention will now be described in detail with reference to the accompanying drawings in which:

FIG. 1 is an exploded perspective view of the device of the present invention.

FIG. 2 is a side elevation of the upper portion of the device of the present invention.

FIG. 3, is an exploded perspective view partially broken away of the drill in relation to the device of the present invention.

FIG. 4 is an exploded perspective view partially broken away of the cartridgeportion of the device of the present invention. f

FIG. 5 is a plan view of the cartridge portion of, the device of the present.invention.- I

FIG. 6 is an end view of the device as shown in FIG.

- FIG. 7 is a sideelevation of the device shown in FIG. 5 and FIG. 6 with'the'screwdriver in juxtaposition. Referring now to the. drawings, there is shown in FIG. I a generally arch-shaped top or head 10 of the device of the present invention. Head 10 has slots 12 and 14 running parallel to the lower edge of head 10 on the inner surface thereof adapted to receive a shoulder or flange described later. In addition, head 10 contains .a slot 16 runningacross the top of head 10 which is adaptable to receive a'clamp or flange so that two identical heads such as head 10 may be clamped together in series.

In-the upper front portion of head 10 are two slots 18 and 20 adaptable to receive a flange or shoulder. A hole 22 running across at the top front portion of head 20 and through slots 18 and 20 is adapted to receive pin 24.

A slide mounting 26 having flanges 28 and 30 containing holes 32 and 34 fits into slots 18 and 20 in head 10 to be securely fastened by pin 24. Thus slidable mounting 26 may rotate on pin 24.

Slide mounting 26 contains two flanges 36 and 38 running lenthwise adapted to receive a slide mounting 40, which can slide into and is held by flanges 36 and 38. A bolt 42, washer 44 and nut 46 protrudes through slide mounting 40 and slide mounting 36 to prevent detachment from each other.

Slide mounting 40 has fixedly attached to it a circular collar 48 adapted to fit around the head of the drill as shown in FIG. 2.

Head 10 contains positioners 50 and 52 which as shown later position the uppermost screw in a firm 'position. for insertion by the drill.

Referring now to FIG. 2, there is shown head 10 to which is attached cartridge 54 shown in more detail later and containing positioners 50 and 52. Slide mounting 26 is held into head 10 by pin 24. Inserted into slide mounting 26 is slide mounting 40 which is held from detachment by bolt 42 and nut 46.

Collar 48' is fastened onto the head of drill 56- and held firmly in place by securing nut 58. The drill bit 60, shown in the drawings as a Phillips-head screwdriver, is then in position in relation to the screw to be inserted so that all the operator need do is press the head 10 and cartridge 54 against the board or object into which the screw is to be inserted and to push the drill forward and insert the drill bit into the screwand the screwinto the wall.

A recoil spring, not shown, may be placed between the drill head 56 or the collar 48 and the head 10which serves to bias the drill and head 10 apart so that after the drill is pushed forward by the operator, pulling back on the drill will separate the drill and head 10. Otherwise, it must be done by hand.

screw 66 will be pressed against the bottom of screw 64 so that a series of screws running from the top of head tained in cartridge 54.

Referring now to FIG. 4, there is shown cartridge 54 in whichhave become inserted a multiple numberof screws, the top screw being 66. The top portion of cartridge54 contains flanges 68 and 70 adapted to be slidingly received in slots 12 and 14 of head 10. Internal flanges 72, 73, 74 and 75 aid in postioning screw 66 and the multiple screws contained in cartridge 54. In the lower portion of cartridge 54, the screws are not shown so that base plate 76 of cartridge 54 may be shown. The bottom screw of the multiple screws which are aligned in cartridge 54 rest against base plate 76. Base plate 76 is biased in a upward direction forcing the screws in an upward direction so that they may lodge in the top position and be ready for use.

The base plate is biased in an upward direction by a pair of springs, 77 and 78, which are attached to the sides or top of base plate 76 and to the top of cartridge 54, thus pulling base plate 76 in an upward direction.

Biasing of base 'plate 76 may also be accomplished by the use of a spring placed below base plate -76 pushing base plate 76 in an upward direction. A

This action forces a new screw into position in head as each succeeding screw is used.

Flanges 72, 73, 74 and 75 extending from the top of cartridge 54 holds the base plate 76 in position in the lower part of cartridge 54.

A cap 80 adapted to snap-fit and lock onto the flanges 68 and 70 of cartridge 54 is snapped onto the top screws in the cartridge 54 until it is ready to be used by insertion into head 10. When the cartridge 54 is slidingly pushed into slots 12 and 14 of head 10 the cap 80 W11 be slid off of the cartridge 54.

Cap 80 contains a cut out in the center so that the screws can be held down in the cartridge 54 by hand or a tool while cap 80 is being placed on.

Cap 80 may be in one piece as shown or may be in two separate pieces having a space between them.

Referring now to FIG. 5, there is shown the cartridge 54 of the present invention showing the top screw 66 located in cartridge 54 having flanges 68 and 70. Flanges 72 and 74 along with flanges 73 and 75 postion the screws so that they are held in a steady firm position. Springs 77 and 78 are hooked to the top of cartridge 54.

Referring now to FIG. 6 there is shown head 10 of the present invention showing the screws in position within the head including top screw 62 and the top screw 66 in cartridge 54. The positioners 50 and 52 along with a positioner 84 on the opposite side of head 10 consist of a fixing head screw 86, a spring 88 and a ball or ballbearing 90. This arrangement allows top screw 62 and each succeeding screw as it moves into the top and operational position, to slide easily into place and be held tightly so that the bit 60 of the screwdriver may be placed into position and the screw screwed into place. The ball bearing 90 is secured to the spring 88.

Referring now to FIG. 7, there is shown the device of the present invention, including head 10, positioners 50 and 52 with spring 92 and ball 94 holding screw 62 in position. The cartridge 54 is mounted into head 10 at slide mounting l4. Drill bit 60 is in position to fit into screw 62 to screw into the object to which it is to be placed.

As can be seen by the drawings shown the device of the present invention works to that a multiple number of screws can be fed into position to be used by a carpenter or operator so that as each screwis screwed into position in the piece of work, the succeeding screw is raised into the operational position at the top of head 10. This device is applicable to any type of screw which is normally used in such operations and the drill bit 60 may be changed for any type screw that may be used. For exceptionally long screws two such heads 10 may be put into series relationship and held by a clamp, not shown, which fits across grooves 16 so that an exceptionally long screw can be held in position by two heads 10 in series.

While the invention has been described above in detail with respect to certain preferred embodiments of the invention and illustrated in the drawings, other modifications and design changes are contemplated, which are within the spirit and scope of the appended claims.

I claim:

1. A cartridge adapted to hold a multiple number of screws for use with a drill comprising an elongated cartridge chamber, spring means to force the screws to the top position, a head secured to the top of the cartridge, positioners in said head to hold the top screw in position.

2. The device of claim 1 wherein said positioners comprise a multiple number of ball bearings, springs forcing said ball bearings to hold the top screw in positon and screws securing said springs to said head.

3. The device of claim 1 wherein said head contains a groove adaptable to hold a clamp to secure two heads in series.

4. The device of claim 1 wherein said spring means comprises multiple springs secured to the bottom and top of said cartridge.

5. A cartridge adapted to hold a multiple number of screws for use with a drill comprising:

a. An elongated cartridge chamber.

b. A base for supporting said screws.

c. Springs attached to the top of said chamber and to said base to urge the screws to the top of said chamber.

d. Head attached to the top of .said cartridge.

e. 'Positioners in said head to hold the top screw.

6. The device of claim 5 wherein said head is attached to said elongated cartridge chamber by shoulders slidingly received in slots in the head.

7. The device of claim 5 wherein said positioners comprise a multiple number of ball bearings, spring forcing said ball bearingsto hold the top screw in position and screws securing said springs to. said head.

8. The device of claim 5 wherein a collar is slidingly fastened to the head to connect said head to a drill. 

1. A cartridge adapted to hold a multiple number of screws for use with a drill comprising an elongated cartridge chamber, spring means to force the screws to the top position, a head secured to the top of the cartridge, positioners in said head to hold the top screw in position.
 2. The device of claim 1 wherein said positioners comprise a multiple number of ball bearings, springs forcing said ball bearings to hold the top screw in positon and screws securing said springs to said head.
 3. The device of claim 1 wherein said head contains a groove adaptable to hold a clamp to secure two heads in series.
 4. The device of claim 1 wherein said spring means comprises multiple springs secured to the bottom and top of said cartridge.
 5. A cartridge adapted to hold a multiple number of screws for use with a drill comprising: a. An elongated cartridge chamber. b. A base for supporting said screws. c. Springs attached to the top of said chamber and to said base to urge the screws to the top of said chamber. d. Head attached to the top of said cartridge. e. Positioners in said head to hold the top screw.
 6. The device of claim 5 wherein said head is attached to said elongated cartridge chamber by shoulders slidingly received in slots in the head.
 7. The device of claim 5 wherein said positioners comprise a multiple number of ball bearings, spring forcing said ball bearings to hold the top screw in position and screws securing said springs to said head.
 8. The device of claim 5 wherein a collar is slidingly fastened to the head to connect said heaD to a drill. 